Daf LF.book - Peterbilt Motors Company

Cab, Instruments and Controls
- the fan is running.
Use of the air conditioning
1. When the air conditioning is in use, the windows must remain closed.
2. To reduce the temperature quickly, first use maximum air speed. Later, the air
speed can be reduced.
3. Avoid direct cold or draught on your body. Do not aim the air vents directly at
your body.
4. Make sure that the temperature difference between the inside and outside of the
cab does not exceed 5 C when you leave the cab. You are therefore advised to
switch off the air conditioning towards the end of your journey.
5. Air conditioning consumes extra power and increases the fuel consumption.
6. On extreme angles (slopes, ruts and difficult terrain) switch off the air
conditioning, to protect the compressor pump against unlubricated operation.
7. Regularly (once a month) switch on the air conditioning briefly, even if cooling is
not required (e.g. in winter). This will prevent serious damage being caused to
the system (including compressor blockage).
Cooling
1. Switch the air conditioning on.
2. Switch the recirculation to position 1, 2 or 3.
3. Turn the temperature control switch to the desired position. For maximum
cooling set the knob to the far left position in the blue area.
4. Open the side and centre vents.
While heating, it is possible to use the air conditioning to remove moisture from the
air in the cab. This has the advantage that demisting of the window glass will be
quicker.
Dehumidification
1. Switch the air conditioning on.
2. Switch off the recirculation.
3. Open the vents on the centre console and at the side windows and set them as
desired.
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